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AMPHIPACIFICA VOL II NO. 4. OCT. 10. 2000 3 the Species of Lysmata (Caridea: Hippolytidae) from the Eastern Pacific Ocean MARY K

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AMPHIPACIFICA VOL II NO. 4. OCT. 10. 2000 3 the Species of Lysmata (Caridea: Hippolytidae) from the Eastern Pacific Ocean MARY K AMPHIPACIFICA VOL II NO. 4. OCT. 10. 2000 3 The Species of Lysmata (Caridea: Hippolytidae) from the Eastern Pacific Ocean MARY K. WICKSTEN Department of Biology Texas A&M University College Station, Texas 77843-3258 ABSTRACT Three new species, Lysmaia argento punctata. L. chica, and L. nayaritensis, arc described from the eastern Pacific. The species can be distinguished by the rostral teeth, number of free articles of the accessory branch of the flagellum of the antennulef the length of the stylocerite. and the number of articles in the carpus of the second pereopods. The color patterns of L. argcnlopunciaia and L chica are characteristic. Including these new species, eight species of Lysmata are known from the eastern Pacific. A key and brief diagnoses of ail species are provided. INTRODUCTION Species of Lysmaia are known as red rock shrimp, lands. Examination of these shrimp revealed four peppermint shrimp or cleaner shrimp. They live among unidentifiable species. One of these, L. gracilirostris. rocks, corals or other hard substrates, and are noctur- has been described in a previous paper (Wicksten nally active. Some are cleaners: they remove debris, 2000). parasites, diseased tissue, etc. from fishes. The descriptions of the new species are given herein, While examining specimens of Lysmata spp. from along with a key for identification. Carapace lengths the vicinity of La Paz, Baja California Sur, Mexico, (CL) are given in millimeters. The illustrations are by students, colleagues and I encountered specimens that Michael Hodnett, Texas A&M University. could not be identified with certainty using existing I found misidentifications and confusion in the lit­ keys (Wicksten 1983, 1990). I compared these speci­ erature regarding tropical eastern Pacific species, and mens with material from among the collections of the have re-examined specimens when possible to confirm California Academy of Sciences (CAS), Los Angeles their identity. However, some of the identifications in County Museum of Natural History (LACM), United regional checklists and keys remain in doubt. The States Museum of Natural History (USNM), Scripps reader should use the revised key presented here in­ Institution of Oceanography (SIO), Charles Darwin stead of those given by Wicksten (1983, 1990) and Research Station, Galapagos Islands, Ecuador(CDRS), double-check the identities of specimens of interest. and 18 specimens of L. intermedia from Isla de Lobos, I am grateful to Cedric d'Udekem d'Acoz of Braine- Gulf of Mexico, Mexico from the Texas A&M Univer­ I' Alleud, Belgium for sharing with me information on sity Systematic Collection of Invertebrates (catalogue morphology of L. intermedia, and reviewing an earlier numbers 2-2141,2144, 2146-2147, 2149-2152,2154- version of the manuscript. Ken-Ichi Hayashi of the 2156,2159 and 3252). With the aid of Carlos Slnchez National Fisheries University, Shimonoseki, Japan also Ortiz, Luis Hernandez and students of the Universidad reviewed an earlier version of the manuscript. Aut6noma de Baja California Sur (UBCS), La Paz, 1 collected and photographed fresh specimens of Lys­ SYSTEMATICA mata spp. at four locations in Baja California Sur: Punta Arenas, Calerita, Los Islotes and Cabo San Lysmata argentopunctata, new species Lucas. With the aid of Rodrigo Bustamante and the (Figs. 1-3) staff of the marine laboratory of the Charles Darwin Research Station (CDRS), I collected specimens in the Lysmata intermedia Kerstitch 1989: 81, fig. 199. Galapagos Islands. Cleveland Hickman, Jr. of Wash­ (misidentification. not Hippolysmata intermedia ington and Lee University, Arlington, Virginia photo­ Kingsley, 1878). graphed specimens in life and loaned previously col­ Lysmata californica Wicksten 1983: 27 (in part); lected specimens of Lysmata from the Galapagos Is­ Wicksten 1990: 596 (in part);Wicksten 1991: 151 (in AMPHIPACIFICA VOL. II NO. 4. OCT. 10, 2000 44 part);Wicksten and Hendrickx 1992: 7 (in part); Eyes large, cornea darkly pigmented. In juveniles, Wicksten 1996: 287. (misidentifications: not Hippo- eyes proportionally larger than in adults. lysmata californica Stimpson. 1866). Antennal peduncle (Fig. 1 A. H) short and stout, about 0.5 X length of scaphocerite. Stylocerite reaching or Material examined: HOLOTYPE* ov. female. CL 9.2; overreaching first segment of antennular peduncle. Morro Colorado. Sonora (28° 20K 111° 18*W). under rocks. First segment with tuft of spinules on anterior margin 5-10m. 126 Januar> 1982, AlexKerstitch, LA CM 19821381. and small ventromesial spine, longer than second seg­ PARATYPES: PACIRC COAST OF BAJA CALIFOR­ ment; second segment longer than third. Antennular NIA. MEXICO: Male. CL 5.1; Ridge north of North Rock. fiagella almost as long as body. Accessory branch of RocasAlijos, 30-35 m. 15 Feb. 1993. Jeff Bozanic. LACM. outer flagellum with 13-17 free articles, free for nearly GULF OF CALIFORNIA. MEXICO: 3 females. CL 7.2- 10.0, none ov.; Isla Blanca. Bah fa Bacochibampo. Sonora. half of its length, and 13-15 fused articles, densely 6 m. nibble. 3 July 1978. Alex Kerstitch, LACM 1192-01.4 setose in juveniles but with fewer setae in adults. ov. females. CL 8.0-10.2. male. CL 7.3; Morro Colorado, Basiccrite with sharpanterolateral spine. Scaphocerite Sonora, underrocks,5-l0m. 16 January 1982. A lex Kerstitch. (Fig. 1A, H) elongate and slender, 4X long as wide, LACM 82-0116. Male, CL 5.6; Bahfa San Gabriel. Isla lateral tooth distinctly overreaching scale. Scale ap­ Espfritu Santo, among coral, 7 March 1937, Yelejco. Hi sta. proximately 2X length of antennular peduncle. 638-37, USNM cat no. 237435. 10females, CL3.5-6.6,3 of Flagellum of antenna longer than body. them ov., 3 males, CL 3.4-5.6, also 2 broken specimens; Mouthparts as figured (Fig3). Third maxilliped (Fig. Bahfa San Gabriel, among coral. 7 March 1937, Velero Ul 3A) reaching past end of antennal scale, with exopod sta. 638-37, USNM cat. no. 237436. Female, CL3.8. male. CL 4.1,1 broken specimen; Bahfa San Gabriel, among coral reaching well past midlength of antepenultimate seg­ in shallow water, 20 March 1936, Velero Ui sta. 604-36. ment. Penultimate segment short, less than 0.5X length USNM cat. no. 237415. 17 females, CL CL 23-6.1, 10 of of ultimate segment. Ultimate segment setose, espe­ them ov., male, CL3.6; Los Islotes. Baja California Sur, 30 cially in juveniles, with 4-5 spines at and near apex. m, among rocks, 27 July 1997. Luis Hernandez, UBCS. 5 Epipod present. females, CL3.3-7.2.1 of them ov.; Roca Ptelicano, CaboSan First to fourth pereopods with epipods, all reaching to Lucas. Baja California Sur, 2-5 m, in crack in rock, 20 July or beyond end of antennal scale when extended. First 1996. Carlos Sanchez and party, UBCS. GALAPAGOS pereopod (Fig. 2A) short and chelate, fingers of chela ISLANDS, ECUADOR: 2 ov. females. CL 8.2-8.6, male, CL6.3; Isla Albany, 23 August 1997. C.P. Hickman, CDRS less than 0.5X palm (Fig. IE). Carpus at least as long 97-348. 97-349. Ov. female. CL 6.2; Devil's Crown (also as chela. Merus slightly longer than carpus. Ischium called Corona del Diablo or Isla Onslow), under rock, 10-18 short. Second pereopod (Fig. 2B) elongate. Fingers of m. l7Aug. 1998,CDRS98-508.Ov.female,CL5.8; Devil's chela (Fig. IF) shorter than palm. Carpus with 20-27 Crown, 10-15 m. 18 Aug. 1998. CDRS 98-585. Ov. female, articles (usually 23-25). Merus with 9-12 indistinct CL 7.0; Same location and date, CDRS 98-513. Ov. female. articles, ischium with 6 indistinct articles. Third CL 6.6; Isla Mosquera. 8 m, 20 Aug. 1998, CDRS 98-540. pereopod (Fig. 2C) with dactyl about 0.25 X propodus, biunguiculate, with 2-3 smaller spines on flexor mar­ Description. Rostrum straight, not reaching end of gin. Propodus with 7-9 spinules along flexor margin. second segment of antennular peduncle, with 1-3 dor­ Carpus about 0.7 X propodus, with 2-3 minute spinules sal teeth on carapace and 2-3 teeth on rostrum proper, on flexor margin. Merus with 4-7 ventrolateral spines. 2 or 3 (usually 2) ventral teeth (Fig. IA-D, H). Dorsal Ischium short. Fourth pereopod (Fig. 2D) similar to teeth usually not extending past cornea of eye; bare third, but shorter, merus with 3-7 ventrolateral spines. space between anteriormost spine and apex of rostrum. Fifth pereopod (Fig. 2E) shorter still, merus with 2-4 Carapace with slight forward protrusion above strong ventrolateral spines. Meral spines fewer or missing antenna! spine, and minute pterygostomian spine. from specimens with regenerating appendages. Pleura of first to third abdominal somites rounded, First pleopod (Fig. 31) with endopod slender and fourth slightly produced, fifth with posterolateral point, short. Second pleopod (Fig. II, 3G, H) with appendix sixth somite withposteroventralpoint(Fig. lD).Te!son interna. Appendix masculina (Fig. 3G, H) about 2X (Fig. IJ) slightly shorter than uropods, with 2 pairs length of appendix interna. Outer uropod (Fig. I J) dorsolateral spines: one pair near midlength and other with posterolateral spines. Carapace length of female closer to apex than to anterior pair. Apex of telson to 10.2 mm, male to 7.9. pointed and flanked by two pairs of spines: lateral pair Color in life. Antennae and appendages red. Body with long, mesial pair very short. dark greenish or red longitudinal lines interspersed o AMPHIPACIRCA VOL II NO. 4, OCT. 10. 2000 5 Fig. 1. Lysmata argentopunctata, n. sp. Female, CL8.0, Morro Colorado. Sonora, Mexico. A. frontal region in dorsal view; B, C, two shapes of the rostrum from paratype specimens; D, entire animal in lateral view; E, detail of chela of first pereopod; F, detail of chela of second pereopod; G, dactyl of third pereopod; H, frontal region in lateral view; It female second pereopod; J, telson and uropods.
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